Python getDeviceSize Examples

Programming Language: Python

Namespace/Package Name: multipath

Method/Function: getDeviceSize

Examples at hotexamples.com: 2

Python getDeviceSize - 2 examples found. These are the top rated real world Python examples of multipath.getDeviceSize extracted from open source projects. You can rate examples to help us improve the quality of examples.

Example #1

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File: blockSD.py Project: humblec/vdsm

def _zeroVolume(sdUUID, volUUID):
    """Fill a block volume.

    This function requires an active LV.
    """
    dm = lvm.lvDmDev(sdUUID, volUUID)
    size = multipath.getDeviceSize(dm)  # Bytes
    # TODO: Change for zero 128 M chuncks and log.
    # 128 M is the vdsm extent size default
    BS = constants.MEGAB  # 1024 ** 2 = 1 MiB
    count = size / BS
    cmd = [constants.EXT_DD, "oflag=%s" % misc.DIRECTFLAG, "if=/dev/zero",
           "of=%s" % lvm.lvPath(sdUUID, volUUID), "bs=%s" % BS,
           "count=%s" % count]
    p = misc.execCmd(cmd, sync=False, nice=utils.NICENESS.HIGH,
                     ioclass=utils.IOCLASS.IDLE, deathSignal=signal.SIGKILL)
    return p

Example #2

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File: blockSD.py Project: oVirtorg/vdsm

def _zeroVolume(sdUUID, volUUID):
    """Fill a block volume.

    This function requires an active LV.
    """
    dm = lvm.lvDmDev(sdUUID, volUUID)
    size = multipath.getDeviceSize(dm)  # Bytes
    # TODO: Change for zero 128 M chuncks and log.
    # 128 M is the vdsm extent size default
    BS = constants.MEGAB  # 1024 ** 2 = 1 MiB
    count = size / BS
    cmd = [constants.EXT_DD, "oflag=%s" % misc.DIRECTFLAG, "if=/dev/zero",
           "of=%s" % lvm.lvPath(sdUUID, volUUID), "bs=%s" % BS,
           "count=%s" % count]
    p = misc.execCmd(cmd, sync=False, nice=utils.NICENESS.HIGH,
                     ioclass=utils.IOCLASS.IDLE, deathSignal=signal.SIGKILL)
    return p